EP2761161B1 - Dispositif d'actionnement - Google Patents

Dispositif d'actionnement Download PDF

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Publication number
EP2761161B1
EP2761161B1 EP12742829.0A EP12742829A EP2761161B1 EP 2761161 B1 EP2761161 B1 EP 2761161B1 EP 12742829 A EP12742829 A EP 12742829A EP 2761161 B1 EP2761161 B1 EP 2761161B1
Authority
EP
European Patent Office
Prior art keywords
actuating device
actuating
housing
guide
spring
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Not-in-force
Application number
EP12742829.0A
Other languages
German (de)
English (en)
Other versions
EP2761161A1 (fr
Inventor
Andres Tönnesmann
Andreas Köster
Martin Nowak
Michael Schäfer
Michael Breuer
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Pierburg GmbH
Original Assignee
Pierburg GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Pierburg GmbH filed Critical Pierburg GmbH
Publication of EP2761161A1 publication Critical patent/EP2761161A1/fr
Application granted granted Critical
Publication of EP2761161B1 publication Critical patent/EP2761161B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H19/00—Gearings comprising essentially only toothed gears or friction members and not capable of conveying indefinitely-continuing rotary motion
    • F16H19/02—Gearings comprising essentially only toothed gears or friction members and not capable of conveying indefinitely-continuing rotary motion for interconverting rotary or oscillating motion and reciprocating motion
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B37/00—Engines characterised by provision of pumps driven at least for part of the time by exhaust
    • F02B37/12—Control of the pumps
    • F02B37/18—Control of the pumps by bypassing exhaust from the inlet to the outlet of turbine or to the atmosphere
    • F02B37/183—Arrangements of bypass valves or actuators therefor
    • F02B37/186—Arrangements of actuators or linkage for bypass valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M26/00—Engine-pertinent apparatus for adding exhaust gases to combustion-air, main fuel or fuel-air mixture, e.g. by exhaust gas recirculation [EGR] systems
    • F02M26/13—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories
    • F02M26/22—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories with coolers in the recirculation passage
    • F02M26/23—Layout, e.g. schematics
    • F02M26/27—Layout, e.g. schematics with air-cooled heat exchangers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M26/00—Engine-pertinent apparatus for adding exhaust gases to combustion-air, main fuel or fuel-air mixture, e.g. by exhaust gas recirculation [EGR] systems
    • F02M26/45—Sensors specially adapted for EGR systems
    • F02M26/48—EGR valve position sensors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M26/00—Engine-pertinent apparatus for adding exhaust gases to combustion-air, main fuel or fuel-air mixture, e.g. by exhaust gas recirculation [EGR] systems
    • F02M26/65—Constructional details of EGR valves
    • F02M26/66—Lift valves, e.g. poppet valves
    • F02M26/67—Pintles; Spindles; Springs; Bearings; Sealings; Connections to actuators
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/10—Internal combustion engine [ICE] based vehicles
    • Y02T10/12—Improving ICE efficiencies
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T74/00—Machine element or mechanism
    • Y10T74/18—Mechanical movements
    • Y10T74/18056—Rotary to or from reciprocating or oscillating

Definitions

  • the invention relates to an adjusting device with a movable actuator via an actuator whose main translational motion is superimposed by a pivoting movement, a translationally movable transmitting element with a magnetic field, the pressure applied against a first end of the actuator, and with a fixedly disposed in a housing receiving element interacts.
  • Such adjusting devices can be used in the field of motor vehicle construction in a variety of applications in the field of internal combustion engine.
  • exhaust gas recirculation valves, wastegate valves, register flaps or VTG actuators can be driven by means of such adjusting devices.
  • actuators have an electric motor as a drive unit, via which a transmission and following a crank or directly a crank is driven.
  • This crank is operatively connected to a link in a rotationally acting drive element, via which the movement of the electric motor is converted into a substantially linear movement of an actuating element.
  • pneumatic or electromagnetically actuated actuators enable electromotive actuator finer positioning of the downstream actuator and a higher actuating force by varying the rotary lever, which can be further increased by an intermediate gear.
  • the position of the control element In order to control such an actuator as desired, the position of the control element must be known.
  • a magnet is usually coupled with a Hall sensor.
  • the measurement is contactless and therefore wear-free.
  • the measurement can be arranged directly on the drive or transmission components, which has the advantage that in thermally highly loaded application areas such as exhaust gas recirculation valves, the magnet and the Hall sensor can not be damaged by the high temperatures occurring.
  • a disadvantage of such a positioning is that by play in the drive components, the measurement inaccuracy is very high. For this reason, it is attempted to determine the position of the adjusting element directly on the adjusting element or on a, the linear movement of the actuating element in the same way performing component.
  • a valve device in which a rotational movement of an actuator is converted into a translational movement of the adjustment adjusting valve, wherein the position of the actuating element by means of a rigidly connected to the adjusting element, the magnet-bearing support member and the position of the magnet-measuring non-contact Sensor is determined.
  • the movement of the actuating element is not exclusively translational, whereby the measurement would be falsified with only one sensor, at least two sensors are required to first determine the spatial position of the actuating element and to calculate the translational component thereof.
  • the use of two sensors results in increased material costs.
  • the first end of the actuating unit has a circular arc-shaped contour whose circular arc central axis is a first pivot axis, only the translational motion component of the actuator is measured.
  • the need to use two Hall sensors, which measure the movement of the actuating element in two mutually perpendicular directions, is eliminated. This lowers the material costs and avoids calculating the translational motion component. Also the reliability of the sensor unit is doubled by eliminating the one sensor.
  • the first pivot axis is the center axis of a cylindrical journal.
  • the transmitting element is a magnet or a carrier element with a magnet. This has the advantage that the magnet is particularly well suited for non-contact measurement and can be positioned freely in the carrier element, whereby a greater latitude for the positioning of the receiver element arises.
  • a spherical cap-shaped surface is formed on the first end of the setting unit whose center is the intersection of the first pivot axis and a second pivot axis orthogonal to the first pivot axis.
  • the first end of the actuating unit is a rod head which is fastened to an actuating element.
  • the contour can be formed particularly easily.
  • a fixed guide for the transmitting element is arranged in the housing.
  • the magnet executes exactly the translatory movement of the setting unit.
  • the guide is formed integrally with the housing. This reduces the number of parts required and thus material and assembly costs.
  • the transmitting element is pressure-loaded directly or indirectly against the first end of the setting unit by an elastic element. This has the advantage that the magnet is always, also against gravity, proportional to the translational main movement direction of the actuator is moved.
  • the elastic element is a spring.
  • a spring is corrosion resistant and thermally resilient.
  • the transmitting element is at least partially hollow and closed at its side facing the adjusting unit. As a result, a part of the spring and the guide lie in the transmitting element whereby the required space is reduced.
  • the spring surrounds the transmitting element.
  • the spring is guided and a buckling of the spring is prevented.
  • the spring is at least partially enclosed by the guide and bears against the housing. This has the advantage that the spring is protected to the outside.
  • the guide is at least partially enclosed by the spring. It is advantageous that less material and space is required for the leadership.
  • the transmitting element at least partially surrounds the guide. This can do that
  • the guide encloses at least partially the transmitting element.
  • a heat-insulating element is arranged between the magnet and the setting unit. This reduces the thermal load on the magnet, increasing its durability.
  • the transmitting element on its side facing the setting unit on a circumferential projection which is pressure-loaded by the spring. This allows the spring enclose the guide and the transmitting element, whereby the assembly is very easy.
  • the heat-insulating element is formed integrally with the rod head or integrally with the transmitting element. This reduces the number of installed parts, which reduces assembly costs.
  • the senor is cast or injected in the housing. This has the advantage that the sensor is protected against environmental influences.
  • an adjusting device is provided, with the cost-effective and simple way the translational motion component of the non-translational movement of the actuator, can be determined exactly.
  • the adjusting device 10 consists of a two-part housing 16, in which a serving as a drive unit 8 electric motor is arranged in a correspondingly shaped receptacle 9 of the housing 16.
  • the housing 16 is formed in two parts, wherein the two housing halves are firmly connected to each other by housing screws 54.
  • the drive unit 8 drives via an unillustrated transmission to a drive shaft, not shown, on which an eccentric 40 is fixed, at its opposite end an eccentric Ausbsausbolzen 42 is attached, which is parallel to the drive shaft, so that the drive shaft, the Exzenterausgangsbolzen 42 and the eccentric 40 form a crank.
  • the drive element 12 is formed substantially disc-shaped and has at a first invisible end portion on a bore through which a rotation axis in the form of a rotatably mounted in bearings pin projects, which is fixedly connected to the drive element 12, so that the drive element 12 is rotatably supported by the bearings in its extension plane.
  • a shaped through hole 46 is formed, which has a circular arc-shaped inner contour 38, as in FIG. 1 is shown.
  • a spherical ring-shaped bushing 22 is arranged made of plastic, which has a, corresponding to the arcuate inner contour 38 of the shaped through hole 46 outer contour 34, whereby the sleeve 22 is pivotally mounted in the molded through hole 46 in the drive member 12 about the pivot axis 30, whereby production-related and voltage-generating offset between adjusting device and via an actuating element 14 to be actuated valve can be compensated.
  • a cylindrical bearing journal 20 is rotatably arranged, which has the same central axis 28 as the sleeve 22.
  • the journal 20 protrudes on both sides in holes 48 in legs 50 of a U-shaped rod end 24 and is firmly connected thereto.
  • the bushing 22 is secured against axial displacement by the leg 50 of the rod end 24 resting against the bush on both sides.
  • the actuator 14 projects with its, the rod end 24 opposite end through a housing opening 52 to the outside.
  • the housing opening 52 is designed substantially as a through hole, whose diameter is larger than the diameter of the adjusting element 14, so that it can perform a tilting movement in the housing opening 52.
  • the housing opening 52 is closed by an elastomer ring 56 which is fixed in the housing opening 52 in the housing 16 and radially surrounds the actuator 14 and at the same time allows the tilting movement of the actuator 14.
  • a surface 62 of the rod head 24 is formed kugelkalottenförmig, wherein a center 70 of the spherical cap surface 62 is the intersection of the pivot axes 30 and 32.
  • the surface 62 is pressure-loaded by a carrier element 68 in the direction of the actuating element 14, the carrier element 68 enclosing a housing 16, not shown guide surrounds and is translationally movable according to the main movement direction of the actuating element 14 and at least one magnet 72 contains.
  • a spring 64 in the form of a helical spring, the support member 68 and the guide is arranged enveloping in the housing 16, wherein the one end of the spring 64 abuts against the housing 16 and the other end rests on a circumferential projection 74 of the support member 68 so that the support member 68 is pressed in the direction of the rod head 24.
  • the surface 62 of the rod head 24 pressure-bearing surface 76 of the support member 68 is executed plan.
  • a non-illustrated receiving element in the form of a Hall sensor is arranged, which measures the position of the magnet 72, whereby the position of the actuating element 14 is determined in a known manner.
  • the drive unit 8 is actuated, the drive shaft and with it the eccentric 40 is rotationally actuated via the transmission.
  • the Exzenterausgangsbolzen 42 moves on a circular arc around the drive shaft, wherein the arranged on the Exzenterausgangsbolzen 42 bearing runs in the slot 44, whereby the drive member 12 is rotated about its axis of rotation.
  • the guided in the formed through hole 46 in the drive member 12 sleeve 22 is thereby moved on a circular arc path around the axis of rotation of the drive member 12.
  • the axis of rotation and the sleeve 22 are arranged such that the arcuate path along which the sleeve 22 moves, a significantly larger component in the main direction of movement of the actuating element 14 has, as in a direction perpendicular thereto. Accordingly, the actuator 14 is moved over the rod head 24 and the sleeve 22 along the central axis 28. However, at the same time a slight tilting movement about a pivot axis 32 results due to the circular arc path.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Combustion & Propulsion (AREA)
  • Analytical Chemistry (AREA)
  • Transmission And Conversion Of Sensor Element Output (AREA)

Claims (18)

  1. Dispositif d'actionnement (10) comprenant
    une unité d'actionnement (18) mobile par un actionneur, dont le mouvement de translation principal est superposé par un mouvement pivotant,
    un élément transmetteur, apte à être déplacé en translation, avec un champ magnétique, ledit élément s'appuyant, sollicité par une pression, sur une première extrémité de l'unité d'actionnement (18), et coopérant avec un élément récepteur disposé de manière fixe dans un carter (16),
    caractérisé en ce que
    la première extrémité de l'unité d'actionnement (18) a un contour (62) en arc de cercle, dont l'axe central de l'arc de cercle est un premier axe de pivotement (32).
  2. Dispositif d'actionnement (10) selon la revendication 1, caractérisé en ce que le premier axe de pivotement (32) es l'axe central d'un tourillon (10).
  3. Dispositif d'actionnement (10) selon la revendication 2, caractérisé en ce que l'élément transmetteur est un aimant (72) ou un élément porteur (68) avec un aimant (72).
  4. Dispositif d'actionnement (10) selon l'une quelconque des revendications précédentes, caractérisé en ce qu'une surface (62) en forme d'une calotte sphérique est formée à la première extrémité de l'unité d'actionnement (18), dont le centre (70) est l'intersection du premier axe de pivotement (32) et d'un deuxième axe de pivotement (30) orthogonal au premier axe de pivotement (32).
  5. Dispositif d'actionnement (10) selon l'une quelconque des revendications précédentes, caractérisé en ce que la première extrémité de l'unité d'actionnement (18) est une tête de tige (24) fixée sur un élément d'actionnement (14).
  6. Dispositif d'actionnement (10) selon l'une quelconque des revendications précédentes, caractérisé en ce qu'un guide fixe pour l'élément transmetteur est disposé dans le carter (16).
  7. Dispositif d'actionnement (10) selon la revendication 6, caractérisé en ce que le guide est formé d'un seul tenant avec le carter (16).
  8. Dispositif d'actionnement (10) selon la revendication 7, caractérisé en ce que l'élément transmetteur est sollicité sous pression par un élément élastique directement ou indirectement contre la première extrémité de l'unité d'actionnement (18).
  9. Dispositif d'actionnement (10) selon la revendication 8, caractérisé en ce que l'élément élastique est un ressort (64).
  10. Dispositif d'actionnement (10) selon l'une quelconque des revendications précédentes, caractérisé en ce que l'élément transmetteur est au moins partiellement creux et qu'il est fermé à son côté tourné vers l'unité d'actionnement (18).
  11. Dispositif d'actionnement (10) selon l'une quelconque des revendications 9 ou 10, caractérisé en ce que le ressort (64) est au moins partiellement enfermé par le guide et s'appuie sur le carter (16).
  12. Dispositif d'actionnement (10) selon l'une quelconque des revendications 9 ou 10, caractérisé en ce que le guide est au moins partiellement enfermé par le ressort (64).
  13. Dispositif d'actionnement (10) selon l'une quelconque des revendications 11 ou 12, caractérisé en ce que l'élément transmetteur enferme le guide au moins partiellement.
  14. Dispositif d'actionnement (10) selon l'une quelconque des revendications 11 ou 12, caractérisé en ce que le guide enferme l'élément transmetteur au moins partiellement.
  15. Dispositif d'actionnement (10) selon l'une quelconque des revendications 13 ou 14, caractérisé en ce que l'élément transmetteur comprend une saillie (74) circonférentielle sur son côté tourné vers l'unité d'actionnement (18).
  16. Dispositif d'actionnement (10) selon l'une quelconque des revendications précédentes, caractérisé en ce qu'un élément thermiquement isolant est disposé entre l'aimant (72) et l'unité d'actionnement (18).
  17. Dispositif d'actionnement (10) selon la revendication 16, caractérisé en ce que ledit élément thermiquement isolant est formé d'un seul tenant avec la tête de tige (24) ou d'un seul tenant avec l'élément transmetteur.
  18. Dispositif d'actionnement (10) selon l'une quelconque des revendications précédentes, caractérisé en ce que l'élément récepteur est moulé ou injecté dans le carter (16).
EP12742829.0A 2011-09-30 2012-07-17 Dispositif d'actionnement Not-in-force EP2761161B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102011054082A DE102011054082B3 (de) 2011-09-30 2011-09-30 Stellvorrichtung
PCT/EP2012/063978 WO2013045132A1 (fr) 2011-09-30 2012-07-17 Dispositif de commande

Publications (2)

Publication Number Publication Date
EP2761161A1 EP2761161A1 (fr) 2014-08-06
EP2761161B1 true EP2761161B1 (fr) 2017-04-12

Family

ID=46603901

Family Applications (1)

Application Number Title Priority Date Filing Date
EP12742829.0A Not-in-force EP2761161B1 (fr) 2011-09-30 2012-07-17 Dispositif d'actionnement

Country Status (4)

Country Link
US (1) US20140230582A1 (fr)
EP (1) EP2761161B1 (fr)
DE (1) DE102011054082B3 (fr)
WO (1) WO2013045132A1 (fr)

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Also Published As

Publication number Publication date
WO2013045132A1 (fr) 2013-04-04
EP2761161A1 (fr) 2014-08-06
DE102011054082B3 (de) 2012-12-13
US20140230582A1 (en) 2014-08-21

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